mature_miRNA miRNA* pre-miRNA EST_contig mismatches bulges arm species source_database RFAM_best_hit RFAM_lowest_evalue miRBase_best_hit miRBase_lowest_evalue folding_energy secondary_structure TGGAACTTGCATGAACAGGC CTTTTTTTTGCAAGTTACCACA TGGAACTTGCATGAACAGGCTGTACACACACGATTCCGCCTTTTTTTTGCAAGTTACCACA 2 2 5' arm Ciona_intestinalis mirbase 100 cin-mir-4001b-1 2e-16 -18.63 (((((((((((.(((.((((.................)))).)))..)))))))).))).. (-18.63)